Consider the following set of dependent and independent variables. The variable x3 is qualitative with H = High, M = Medium, and L = Low. The quantitative data for this problem can be found in the Excel file Prob 1535.xlsx.

y 47 42 40 40 31 26 23 18 10 x1 74 63 78 52 44 47 35 17 15 x2 22 29 20 17 13 17 8 15 10 x3 M H H L M H M L L

a. Using PHStat, construct a regression model using all three independent variables.

b. Interpret the meaning of each of the regression coefficients.

Applications AppendixLO1